Former Broncos backup quarterback Brady Quinn hasn't started three games in a season since 2009. Sunday, Quinn will start his third game of the season for the Chiefs, and it may not be the kind of situation he has waited for with three starters in the Kansas City offensive line in question to play.

Chiefs left tackle Branden Albert (back), center/guard Ryan Lilja (knee) and guard Jon Asamoah (thumb) have all been limited this week. Albert did not practice at all — he did do some conditioning work Friday — while Lilja and Asamoah were limited.

The Chiefs formally listed Albert as doubtful, and Lilja and Asamoah were listed at questionable. The Broncos lead the NFL in sacks with 35 and figure to test the Chiefs' plan up front early.

"For all quarterbacks, you want to disrupt the timing of what they're trying to do," Broncos defensive coordinator Jack Del Rio said.

"That's our key, make everybody uncomfortable," said safety Mike Adams, who added: "When you have those two guys (Von Miller and Elvis Dumervil) coming off the edge, the goal is to make everybody uncomfortable."

Running update. Willis McGahee is on injured reserve, having been designated for return in the postseason. That leaves Ronnie Hillman, Lance Ball and Knowshon Moreno to try to pick up the slack at running back.

Asked Friday if any of his current backs could be effective between the tackles as McGahee, Broncos coach John Fox said: "We're going to find out. That's why you play the game, and like I said, we have great confidence. Their teammates have great confidence in them. Everybody's got to step it up."

Injuries. Omar Bolden (concussion) was listed as questionable for Sunday's game. Bolden was held out of Wednesday's practice, but participated on a limited basis Thursday and Friday. If Bolden is not on the game-day active roster Sunday, it would put cornerback Tracy Porter in line to play in a reserve role. Porter practiced fully Friday and was on the trip to Kansas City.

Assuming Bolden is available, there is a chance Porter wouldn't be active for the game if the Broncos needed that spot at another position.

"He's healthy and he's able to get out there and practice," Fox said of Porter. "He hasn't been out there in a month ... but I liked his progress this week."

Defensive end Derek Wolfe (thigh) and wide receiver Demaryius Thomas (knee) each left last Sunday's game against the Chargers with injuries but returned later. Both practiced fully Friday and are expected to play. Guard Chris Kuper (ankle), who has missed the last two games, is expected to start.

The Broncos added Moreno to the injury report Friday with a groin injury he suffered in Thursday's practice. But he practiced Friday and was listed as probable.

Lockheed says object part of 'sensor technology' testing that ended ThursdayWhat the heck is that thing? It's fair to assume that question was on the minds of many people who traveled along Colo. 128 south of Boulder this week if they happened to catch a glimpse of what appeared to be a large, silver projectile perched alongside the highway and pointed north toward town.

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